GIS Data
This category contains introductory text about GIS data such as types of error in GIS datasets, types of GIS data (raster and vector), and metadata.
Pan Sharpening in GIS
Enhance spatial detail in multispectral images with pan sharpening. Learn how this GIS technique combines data for sharper, more detailed satellite imagery.
Witness Posts
Witness posts are signs that alert visitors to the presence of a nearby survey marker.
Types of GIS Data Explored: Vector and Raster
Explore the key differences between GIS vector and raster data, and how each type supports diverse spatial analysis tasks.
This Tools Helps You Figure Out Which Satellite Bands to Use for Remote Sensing
The USGS developed the Spectral Characteristics Viewer to let users view how different Earth observation satellite instruments can be used for their remote sensing needs.
Relief Inversion
Telling the difference between a canyon and a mountain on aerial or satellite imagery can sometimes be tricky due to an optical illusion known as relief inversion.